Web-regulating mechanism



C. P. BOSSERT.

WEB REGULATING MECHANISM.

APPLICATION FILED APR. I, I9Ia.

1,360,717. Patented Nov. so, 1920.

3 SHEETS-SHEET l.

. III

C. P. BOSSERT.

WEB REGULATING MECHANISM.

APPLlcATxoN FILED APR. 1, 191s.

Y 1,360,71 7, Patented Nov. 30, 1920.

sHEETs-SHEET 2.

C. P. BOSSERVT. WEB REGULATING MECHANISM.

.WPHC/111011 FILED APR.1.1918.

lPatented Nov. 30, 1920.

3 SHEETS-SHEET 3.

/ll/llllll/ UNITED STATES PATENT OFFICE.

CIELAJR'LP."S I. BOSSERT, OF VIVIIINVAUQKEE, WISCONSIN.

WEB-REGULATING MECHAN ISM.

Specification of Letters Patent.

Application filed April 1, 1918. Serial No. 226,062.

To all whom t lmay concern:

Be it known that I, CHARLES P. BossERT, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Web-Regulating y Mechanism, of which the following is a speciication.

This invention relates to web controlling or regulating mechanism ot the type which is employed to prevent a web from deviatev ing laterally from a ypredetermined path otY travel. e e

Mechanism of this type is used in many relations. For instance, various devices are in vuse for causing the web in a printing press to travel in a predetermined path. As

soon as the web deviates laterally ,from its predetermined path it is shifted back to its normal path of travel. A

rlChe present web controlling mechanism may be used wherever it is desirable to prevent material deviations of the web from its normal path of travel, but it is particularly adapted for controlling webs of a relatively thick and heavy character. Such a web may be a belt passing over a pulley, and it may be desirable to control the lateral movee ment ot' the belti so that it will not materially depart fromA a predetermined path ot travel and thereby run off of the pulley.`

The web controlling mechanism to be hereinafter described was designed particularly for use on a machine for treatingy hides or Skins, and the mechanism is intended te` keep the endless belt f such a machine in al'inement with the rollers over which the belt passes, so that it will not run oflI of the rollers. VAs will hereinafter be seen, however, .the invention `is not limitedto this particular use, but may be used in various other relations.

One Vobject of the invention is to provide improved mechanism for preventing material lateral deviations of a web from a predetermined path ot travel.

VAnother object is to provide web controlling mechanism of theabove character which is entirely mechanical in its construc-V tion. e

Another object vis to make the web controlling mechanism rugged and durable in construction so that it'will be capable of adjusting or controlling webs of a. relatively thick and heavy nature. A

Another object is to provide a web con trolling mechanism having means actuated by lateral movements of the web andV directly responsive to slight deviations of the web from its normal path of travel which means acts on the web to tension one or the other edge of the same to cause the web to creep back to its normal position on the roller or pulley over which it passes.

Other objects and advantages will hereinafter appear.

One embodiment of the invention is illustrated in the accompanying drawings. The views of the drawings are as follows:

Figure l is a vertical longitudinal section on line 1 1 of Fig. 2, showing a portion of a hide treating machine having the improved web controlling mechanism applied thereto.

Fig. 2 is a top plan Fig. 3 is a vertical longitudinal section on line 3 3 of Fig. l.

Fig. 4 is a horizontal section en line 4 4 of Fig. 3. i

Fig. 5 is an end elevation of the web controlling mechanism showing in an exaggerated manner the position which the parts assume when the web tends to deviate from its normal path of travel.

Fig. 6 is a side elevation of an enlarged portion of the web controlling mechanism.

ig. 7 isa vertical section on line 7 7 of Fig. 6. Y Fig. 8 is a horizontal section through the pivotal support for the channel bars.

ig. 9 is a vertical section on line 9 9 of Fig. 4. L

The invention may take dierent forms, but for the sake of illustration one embodiment of the invention will be specifically described.

The web controlling mechanism comprises in general a member which acts directly on Aa portion of the web to tilt the same transversely, and a second member associated of the structure shown in Fig. l certain parts being omitted.

web or belt of the endless type, and the member which is actuated by the lateral deviations of the web is associated with the'upper'- run of the web. The memberl which acts upon the web to tilt the same transversely is in the form of a tiltable roller passing transversely under the lower run of the web. It is: obvious that when this roller is tilted .in a vertical plane, as forinstance when the upper run of the web deviates from its normal-.path 'oftraveh the webn'illV be guided back to its predetermined path of move ment.

As above stated, the invention is illustrated'as applied to avmachine for treating hides fandvskins. A detaildescription ofthe machinef itselffisnot necessary for an understanding ofthe present invention. It should be noted, however, that the machine compri'se'sa' roller 'or pulley 11 over which'anend less belt 2 passes. The hides orf'skinsto be treated -areplaced upon the upperv run ofthe endless belt 2,-1and are passedunder the mechanism denoted generally at- 3. This mechanismvse'rves to distribute 'upon the surface ofthe hide a so-called vsullid compound `whic'h facilitates Vthe subsequent removal of the hair from the hide or 'skin.`l yThe rear 'end of the machine `is not illus-` trated inthe drawing as it is' not 'necessary for an understanding' of theinvention. Y

The web controlling` mechanism to be hereinafter described prevents material lateral deviations of the lweb 2 such as lmifght vcause the belt to run off theroller 1 or the roller at the rear endlof the machine which is` not illustrated. Furthermore, it causes theupper run ofL the-beltto remain in an exact predetermined'patlrof travel under the: mechanisin. The web controlling'mechanism will'nowbe described. It comprises a channel bar 4 which passes transversely under the upper runl o f the web.v

This bar is mounted so that itis capable of v t VmovementV "longitudinally lof itself and tran'sverse'lyffofthe web. `This is 4'accom'- plished by supporting each end of thelbar 4 von iangedl 'rollers 5, one of each being located on each side of the machine. Two flanged 'rollers 6 are mounted upon the upper portion of the bar 4. VThese rollers are lmounted lon vertical ypins 7 carried by the movable bar 4. (See Figs. 6 and 7). The rollers' are spaced'apart a l distance which is substantially equal to the Aroller 8 passes transversely beneath the lower run of the web 2. As best shown in Fig. 4 it is mounted in brackets 9, which are secured to the ends of the channel bar 10. The channelbar 10 is pivoted intermediate its ends to a stationary channel bar 11 which passes transversely across the lower portion Y of the framework of the machine. The pivotal .connection between the channel bars 10 and 11 may be of any appropriate type, but is preferablyconstructed inthe manner shown in Figs. 8 and 9. A filler blockflQ isbolted in the channel of the channel bar 10 vand a corresponding filler block13 is bolted in the channel ofthe channel bar 11. The yadjacent faces of these-two filler blocks bear .against each other,'andconstitute the pivotal bearing surface for the two channel bars'.V The pivotal connectionbetweenthe two barsiseStabliShed by the pin 14which passes through'the Yfiller blocks 12 and 13.l

It will now be seen that the channel' bar 10 together withthe roller 8 mounted thereon iscapable of-tilting in a vertical plane about the axis ofthe pin 14. When the roller 8 is so tilted, it tilts or .cants thelower runof the webout'of its normal plane.

The tilting ofthe rollerV 8 is accomplished by the longitudinal movement of thebar 4 by the following connections: A cord orV cable 15 issecured to the under sideof each end of the channel bar 4`as shown in Figs. 3 and4, and as vmore clearly yshown by the enlarged'view in Fig. 7. The cable 15 which is secured to the lefthand end of the bar4 passes inwardly overthelleft hand roller 5 and the cable 15 which is secured to the right hand end of the channel bar 4 passes inwardly over the right hand roller 5. Each cable 15 runsv in a groove or recess 16 provided in the corresponding roller 5. 1

(lne of the'cables 15 is secured to one end of the channelfbar 10, and the other cable is secured to the other .end of the channel bar. In order to facilitate this connection, and in order to make the-lengths of the cables ad-v justable'to take 'up slack, and to adjust `the position of the roller 8, theflower end ofveach` Vcable isfsecured lto a rod. v17 by a turn-buckle 18,1as best shown in FigsB and 9. The lower end of the rod 17 is hook-shapedas shown' at 19, and .engagesfacorresponding hook Q0 attached to the Vchannel bar 10.

It iwill now ybe seen that whenl the supper run of the web devia-tes laterally from-'its normal 'or predetermined path Iof travehthe channel bar-is shifted longitudinally onthe rollers 5. lVhen the channel bar 4Sisso shifted it will raise one of the cables 15 and will lower the-other. Thisaction is eX- ern'plied in Fig. 5 'which shows the channel bar 4 shifted to the left. The-left-hand cable 15 is thereforedrawn upward over the corresponding roller 5 andthe righthandlo roller S about its pivotal connection to lthe tension and thus causes the cable is lowered a corresponding amount. This obviously results in a shifting of the position shown in Fig. 5. The result of tilting the roller 8 is to cant the lower run of the web 2, which action places one or the other of the edges of the web under greater web to 4creep on the roller l in such direction that it is brought to its normal position. Therefore, when the upper run of the web ,deviates laterally in either direction, the roller 8 is tilted in the proper direction to guide th'e web back to its normal path of travel.

The mechanism is purely mechanical throughout, and is very rugged in its character. It is capable of controlling or regulating webs or belts of a relatively heavy or'clumsy nature such as that which is required in a machine 'of the type herein described. It is obvious, however, that the same principle may be applied to the adjustment of practically any moving web. Although the invention has been described in connection with an endlessbelt wherein lateral departures of the upper run of the `belt tilts the lower run, it is obvious that the web or belt need not be an endless one, and furthermore, any two portions of the web may be utilized to produce the above results.

ln the type of machine herein described the web controlling' mechanism causes the belt to stay on the rollers over which it passes, and causes it to pass in a predetermined path of travel under the mechanism However, it will be obvious, that the present invention may be used wherever it is desirable to have a web at one or more particular places run in an exact predetermined path of travel. To accomplish this.

the part of the mechanism which is actuated c directly by th'e lateral departures of the web from its predetermined path of travel is positioned in the vicinity of the place where it is desired to have the web run accurately and true. This part of the mechanism may be made to act upon the remaining portion of the mechanism located at any other point where it will accomplish its purpose.

That 1 claim is:

l. In a web regulating mechanism the combination with a web and the roller over which the web passes, of means in advance of the roller for raising oneV side or another of the web out of the normal plane of the web, and means including a flexible member laterally movable with the web as the web deviates from its normal path of travel for actuating the first named means.

2. A web regulating mechanism having means for tensioning one side or another of substantially normal to the web to tilt the 'same-,and means laterally movable with the web astheweb deviates from its normal path of travel for actuating the first named means.`

3. A web regulating mechanism having means for tensioning one side or another or the web by raising apart of the web above the normal plane thereof, means laterally movable with the web asfthe web deviates from its normal path of travel, and means whereby the tensioning means is actuated by the lateral movements of the second named means.

4. In a web controlling mechanism the combination of means for tilting lthe web out of its normal plane, and means including a flexible element actuated by and laterally movable with the web as the web deviates from its-normal path of travel for actuating the first named means.

In a web controllingmechanism the combination of means including a flexible connection actuated by and laterally movable with the web as the web deviates from its normal path of travel, a rockable member for pressing one edge or another o'f the web in a plane normal to the web out of its normal plane of travel, and means between the laterally movable means and the rocha-ble memberto cause a rocking of said member proportional to the extent of movement of said means. y

6. In a web regulating mechanism thel able with the web transversely of the path of the vweb as the web deviates from its normal path of travel, means for engaging the web at another point of its travel and rockable in a plane substantially at right angles to the plane of the web, and means between the first and second named means whereby the second named means is actuated by the transverse movement of the vfirst named means.

7. The combination with a web having an upper and a lower runy of a bar passingl transversely under the upper run of the web. means whereby the bar may be shifted longitudinally when the web deviates laterally from apredetermined path of travel, a tiltable roller mounted under the lower run of the web, and means including positive connections between the bar and said roller whereby the latter is tilted when the upper run of the web deviates from its normal path of travel.

8. The combination with a web having an upper and a lower run, of a bar passing transversely under the upper run of theweb, means whereby lateral deviations 0f the upper run of the web from a predetermined path of travel will shift the bar 10ngitudinally, a tiltable roller mounted under the lower run of the web and means including a flexible connection between each end of the bar and the corresponding endofsaid 'l roller .bythe` shift;

tiltable roller to tiltthe ing' movement of the bar.

9. `Web regulating mechanism comprising y Ya bara'passing transversely under one'portion ofther web,a pair of' rollers upon whichV Y the bar is mounted, means whereby said bar is moved longitudinally on therellers when the web deviates laterally from a predetermined path ot travel, a tiltable roller 'mounted under another portion oit the web, and means including a flexible connection between each end oil' the bar and the corre-j spondingrend of said tiltable roller to tilt the roller by the movement oia the bar.

10.4`Web regulating' mechanism comprising a bar passingtransversely under one portion oi' the web, a pair of rollers upon V which the bar is mounted, means whereby `said bar is moved longitudinally on the rollers when the web ldeviates laterally from a predetermined path of travel,` a tiltable roller mounted under another portion of the web, and a flexible member connected to each end of the roller and to the corresponding,"

end of said bar, the flexible members passing over the rollers which support said bar.y

ll. Neb regulating mechanism compris` ,one portionfof the web, rollers carried directly ing a bai passing'.transversely under by the bar adapted to be engaged by the edges of the web whereby lateral deviations of the web from a predetermined path oi" travel will move the bar longitudinally, a roller mounted adiacent *toV another portion Y of the web andV rockablein a plane perpen-V dicular'v to the web, and means whereby movements of the bar are transmitted to the tiltable roller to tilt the same and thereby the web.

l2. lWeb regulating mechanism comprising a member adapted to be shifted in a direction transversely ot the web by lateral vmovements of one portion of the web, a

wenn? 13. Web regulating `mechanism Y comprising,a' roller mounted adjacent'toV one por-` tion of the"web and extendingV transversely across the same,Y the roller beingvv-pivotally Y mounted intermediate its ends uponfan aXis substantially parallelto the.web, and means responsive to lateral movements otanother portionotthe web `to tilt the roller for the purpose described. l Y,

let. feb regulating one portion of the web, a yroller passing transversely across kanother portion of the web said roller bein(r oivotall f mountedVV a n l intermediate its ends uponV an vaxis substantially parallel to the web, and means includ-v ing connections between the member and the ends of-said roller whereby the latter is tilted when the first named portion of the web deviates laterally from its norinalrpath or travel. y Y u Y l5. Web regulating mechanism compris; ing' aj member iat one point inthe travel of the web mounted .for shifting movements in mechanism compris-A ing a member passing transversely across a direction transversely of the travel of the web by lateral movements of the web at that point, means associated with the web at another point in its travel for tilting' one sideY of the web so as to lie at an angle to' andA outot its normal plane, .and means including a flexible element forming a positive `connection between vthe member and said first named means whereby the first named `means is tilted by the transverse movements of said member. Y l

i6. il eb regulating mechanism comprising` a member adapted to be shifted in a direetiontransversely of the web by lateral to increase the tension at one side or another oi' another portion or' the web, and means including a flexible element positively connecting the first named member and the named portion of lthe web from apredetermined path ot travel will operate the first named means and thereby restore the web to its normal path oi' travel.

ln witness whereof, I have hereunto subscribed my name.

CHARLES P. BOSSERT.

V9() movements of one portion of the web, means means whereby lateral deviations of the first 

